Reenforced metallic chime seam and method of producing same



Aug. 28, 1923. 1,466,643

c. T. DRAPER REENFORGED METALLIC CHIMESEAM AND METHOD OF PRODUCING SAME Filed Feb. 24, 1920 2 Sheets-Sheet l mg." 2Q, 1923. 3,4%,643

C. T. DRPER REENFORCED METALLIC CHIME SEAM AND METHOD OF PRODUCING SAM Filed Feb. 24, 1920 A 2 Sheets-Sheet 2 Patented Aug. 28, 1923.

CHARLES T. DRAPER, F CLEVELAND, OHIO,X ASSIGNOR T0 THE DRAPER MANUFAC- TUBING COMPANY, 0F CLEVELAND, OHIO, A CORPORATION 0F OHIO.

REENFORCED METALLIC CHIME SEAM AND METHOD OF PRODD'CIN G SAME.

Application led February 24, 1920. Serial No. 360,883.

T 0 all -w/zom t may concern.'

it known that I, CHARLES T. DRAPER, a

citizen of the United States of America, residing at Cleveland, in the county of Cuyatain invented cernew and useful Improvements in Reenforced Metallic. Chime Scams and Methods of Producing Same, of which is a' specification.

My invention relates to improvements in reenf of producingsame. the fabrication of a tainers', such as sheet orced metallic chime seam and method The object thereof is cheaper, stronger and durable seam for large metallic conmetal barrels, than has previously appeared in the art.

Draper types of chime seams employing specially rolled angle iron sections tective member or armor, metallic barrels with which such ere are shown in Let-ters Patent No. 95 to JYoung and No. 1.125,011 to as the proand in all prior I am acquainted special forms have been employed. As

a matter of fact, the chime constructions there and do not accurately cial article, for the formity 'of the seam tainable in in shown in saidv patents are idealized represent the commerreason that close-con-` and armor is not ob` practice throughout the peripher v and profile of the angular section.

These angular sections may not commonly ness and proportions, while the cutting shapi plete tained in the market of uniform thickand ng of such sections is attendant with weld and common deformation and departure from a true circle of the precise dimensions desired.

Accordingly. I have devised ways and metn lI'OIl.

s for fabricating Vfrom commercial band which averages of better grade and greater uniformity than angle iron, a closely conforming chime ring or armor for the head ever,

seams of metallic barrels. This, hownecessitates the overcoming of techn1- cal difiicultiesin shaping the armor member from material which of. necessity must be of relatively heavy gauge. However, the Welding of a plain band iron hoop and the removal of the resulting burr or projection are much more readily effected than where angle iron shapes are similarly fabricated.

e armor member preferably is slightly of the barrel o'r the followingv forming surfaces throughout the body of the completed. chime, whereby adequate reinforcement is insured. Numerous and exacting tests of containers embodying my improvements have demonstrated that the type of armor or reinforcing member herein disclosed maintains thel chime seam effectively intact under conditions which will produce damageand leakage in similar chime seams armored by the wellknown angle iron members. The seam and armor of my improvement are found to become deformed and bend together as a unit, instead of separating under extreme stress, as will' be found to occur now and again with the older types of reenforced chimes. This advantage doubtless springs from the close conformity of the chime seam and its chime ring or armor throughout, whereas the original profile of angle iron may not exact conformity by known commercial methods, while the size of the chime ring fabricated therefrom and its shape are not accurate and exact. Thus, the chime seam proper is net interiorly stayed and supported uniformly throughout the circumference thereof, and bending strains, in consequence, are more liable to impair the seam and result in leakage.

Considered from a manufacturing standpoint, the armor or chime ring produced from band iron may be brought to exact dimensions and shape-between massive dies, and with less expense than is involved in practicing the older art. The encircling portion of the hoop preferably is so yshaped that the seam snugly fits thereunder and the final conforming rolls very easily produce the closely conforming unit of seam and armor with a minimum expenditure of labor and power and without deformation. This operation is analogous yto the final closure of the seam.

Further explanation of my improved method and structure, and the advantages thus be brought to thereof may best be made in connection with the accompanying drawings, wherein F ig. 1 is a fragmentary elevation centrally broken away, of the straight strip or band from which the hoop is made.

Fig. 2 is a perspective view of thestrip shown in Fig. 1 after it has been rolled to an annular shape.

Fig. 3 is a perspective view of the hoop shown in Fig. 2 after its ends have been butt welded.

Fig. t is a sectional view of the hoop after being trued and ared between suitable dies.

Fig. 5 is a sectional view of the hoop sha ed to receive the chime seam.

Flig. 6 is a sectional View of the hoop shown in Fig. 5 in position on the chime of the container.

Fig. 7 is a sectional view of the hoop and chime of Fi 6; said hoop having been finally rolle to complete the armored chime. f y

Figs. 8 and 9 are enlarged cross sectional fragmentary views of the seam and hoop corresponding to Figs. 6 and 7 respectively.

Fig. 10 is a similar enlarged cross sectional view of a hoop or chime ring formed of angle iron, applied to the seam of the container.

Fig. 11 is an enlarged fragmentary view in section illustrating the initial truing and Haring of the hoopA between coacting rolls.

Fig. 12 is an enlarged fragmentary view also in section wherein the hoop is shown between the coacting dies just as the curling and sizing of the hoop is beginning, and Fig. 13 is a similar view illustrating these members at the completion of the operation.

Fig. 14 is an enlarged fragmentary view showing in cross section the rolls for completing the armored chime seam, with the container positioned therein.

Throughout the several figures of said drawings l have employed the same character of reference to indicate similar'parts.

By referring to the earlier figures of the drawings my improved method will be very readily grasped, while upon comparing Figs. 9 and 10, an important advantage of the .resulting reenforced chime seam may be made quite apparent. The latter figure may@ be taken as typical of reenforced chime seams of the art, wherein various angular shapes are employed for the reinforcing member. Therein the lack of conformity be tween the seam and its armor is graphically suggested, but a transverse section would emphasize this disadvantage, since the shaping of the members is found to be irregular and lacking in uniformity. On the other hand, Fig. 9 illustrates in cro section an aored chime seam with its members conforming throughout, and which is readily fabricated in accordance -with the method at to be explained.

accenna The blank a of Fig. 1 is accurately cut of the desired length from rolled band iron which is of uniform thickness throughout. After rolling to hoop shape, as shown in Fig. 2, the ends are butt-welded at a. in the well known manner and the burr is smooth or cleaned ci. rlihe ends of band iron, obviously will permit of a more accurate and complete weld than do the limbs of an angle iron section when roller into hoop form for the reason that the ends of the former come squarely together and meet-on the welding line.

One edge of the completed hoop is now slightly flared at a", as by rolling between suitable rolls b, c, shown diagrammatically in section in Fig. 11, which serve as well to true the hoop and prepare it for the dies. The trued hoop is now placed between said dies d, d; the former having a curved annular groove d and being of the exact diameter to bring the hoop to the desired size. Fig. 12 illustrates the dies and hoop in fragmentary form at the commencement of their V operation and Fig. 13 similarly illustrates them at the conclusion thereof.. lt will be observed that the Haring edgel a has now been overturned to form a curved flange a2 annularly ofthe hoop which is adapted readily to {it over the seam e of the barrels chime as shown in Figs. 6 and 8. The hoop also has been brought to size accurately to fit within the recessed head e of the barrel or inetallicl container.

rllhe final operation consists merely in spinning the flange 0L2 closely about and moulded into accurate conformity with the annular seam e, as by the coacting rolls f, f', shown in Fig. 14. These rolls are adapted to compress the chime with considerable force and bring the parts of the seam and reinforcing chime -ring into closely conforming engagement, so that the chime will be practically integral as a whole and the parts will stay each other and bend together under excessive strains or blows. 'llhis is possible in using the lighter and accurately shaped chime ring made of band iron in accordance with the method here pointed out.

On the other hand, with the employment of chime rings made as heretofore, of angular sections, such close conformity will not be obtained. First, an angle section does not it as closely within the barrel head and may not be fabricated as accurately as may my improved chime ring. Second, the angle section, which must be cold rolled or spun, persists somewhat in its original shape at the apex or angle. Third, the Harige requires much ore par and a greater ra of bending, in oreito bring it into over- In! ing relation with respect to the seam.

h features will be more apparent by reteg to Fig. 10, wherein the le section g is shown in position lawn the seam e of the container. It willl be noted that the apex g does not closely conform for some distance interiorly of the chime, while the leg g must be actuated approximately through 90 in addition to subsequently spinning its edge beneath the seam e. This illustration is not by any means exaggerative of actual chime ring fabrication, which, of course, is not capable of the accurate, closely conforming construction obtainable by employing the shaping and sizing dies above described. Moreover, the chime ring formed of angle iron is found under tests approximating' severe usage, to exhibit a tendency to open and separate or bend independently of the seam, so that the annular deformation is more likely to result in producing leakage, than results from the employment of my'improved chime ring under like conditions. Thus, drums embodying my invention, when dropped from a considerable height to a concrete floor have been found to bendv as a unit along a section or sections of the chime, like the bending of a cable or rope and without any tendency to open the seam.

Reverting again to Fig. 10, it will be noted that the vertical leg of the angle iron ring is shown to be of slightly less diameter towards the apex of the angle. This departure from a true cylindrical form insured by my improved chime ring, leaves the rear of the chime seam unsupported and hence liable to open under severe usage. The butt welding of an angle iron ring tends commonly to produce this condition, since in welding the length of the horizontal leg g end to end, a .certain compression and distortion adjacent to g is induced and the diameter of the resultingring is unequally affected. When' the ring, however, is expanded or accurately sized by a suitable die, its diameter is uniform throughout.

Having now described the method of my invention and its preferred product or embodiment, I claim as new and desire to secure by Letters Patent, the following 1. The herein described method of producing a continuously conforming metallic chime for containers, which consists in fabricating'from a flat metallic band, a ring or hoop, welding its ends together, shaping an annular edge approximately of the form of the protected seam, introducing the seam of the container Within said annular edge and tightly compressing the hoop about said seam continuously in conformity to its outer andhinner periphery, substantially as set fort a chime ring from a flat 2. The herein described method of producing a closely conforming metallic chime for containers, which consists in fabricating metallic band, welding its ends together, shaping said band approximately to the desired form, sizing the 'ring between dies accurately to conform to the head of the container, and overturning an edge of the ring to enclose and protect the exterior of an inserted annular seam, substantially as set forth.

3. The herein described method of pro'- ducing an armored chime for metallic containers, which consists in fabricating a chime ring, shaping it approximately to the nal form, sizing the ring between dies, inserting the annular seam of the container and the head within the ring, and compressing an edge of said ring about the sears, substantially as set forth.

4. The herein described method of fabricating a protected chime seam for metallic containers, which consists in cutting a blank of the required length from an iron strip of even gauge, bending it to circular form, butt welding its ends, shaping one edge Within a die to afford an open rimmed conforming annular recess for the .chime seam, inserting said seam within the recess, and forcibly closing the protective ring in close engagement exteriorly of the seam, substantially as set forth.

5. The herein described method of producin av protected chime seam for metallic containers, which consists in bending and welding an undersized hoop from band iron,

flaring an edge thereof, expanding said hoop accurately to the requisite size of said container, shaping the flared edge to afford a conforming annular recess for the chime seam, and overturning said edge about lthe inserted chime seam of the container, substantially as set forth.

6. The herein described method of fabricating a protected chime seam for metallic containers, which consists in cutting a blank of the required length from an iron strip of even gauge, bending it to circular form, butt welding its ends, rolling one edge thereof slightly to [lare the the edge between dies whereby a semi-conforming open rimmed receptacle is formed for the chime seam of the container, insert.-

ing said seam and closing thel protective ring tightly about the seam, forth.

In testimony whereof I`do now a'Hix my signature.

' CHARLES T. DRAPER.

substantially as set' same, overturning 

